Gas-cleaner.



No. 896,365. PATENTED AUG. 18, 1908.

A. ERNST.

GAS CLEANER. APPLICATION FILED FEB. 14, 1908.

2 SHBETS-SHEET 1.

six): Q Id 5 Z51: v i 2M0; 7 ammroz PATENTED AUG. 18, 1908.

A. ERNST, GAS CLEANER.

APPLICATION FILED FEB. 14, 1908.

2 SHEETS-SHEET 2.

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UNITED STATESVPATENT OFFICE.

ALFRED ERNST, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE COAL AND COKEBY- PRODUOTS COMPANY, A CORPORATION OF WEST VIRGINIA.

GAS-CLEANER.

Specification of Letters Patent.

Application filed February 14, 1908. Serial No. 415,847.

Patented Aug. 18, 190B.

To all whom 'it may concern:

Be it known that I, ALFRED ERNs'r, acitizenof the United .States, and aresident of Pittsburg, in the State of Pennsylvania, have inventedcertain new and useful Im rovements in Gas-Cleaners, of which the folowing is a specification. I 1

The invention relates to means for cleaning and purifying the gases byextracting byproducts and impurities from the gas.

The object of the invention is to produce a simple and effective gascleaning-apparatus. The invention may be used with many kinds of gas,and I have selected for illustration a machine embodying the inventionand particularly designed for washing and purifying the gases liberatedin by-product coke ovens, and for extracting the by-products, such asammonia and tar.

The rocess or method described, being a divisib e invention and indeendent of the particular apparatus, forms t e subject-matter of myco-pending application N 0. 427,163,

' *filedA ril .15, 190

, seen from the left side of Fig. 1. I

In t e accompanying drawings: Figure 1 1s a vertical sectional view, andFig. 2 1s a side elevatlon of the same, partly in section,

At A is the gas inlet, through which the coke oven gas is introducedinto the machine after being partly cooled in the gas collecting mainson top of the ovens and the conducting pipes leading to this machine.The inlet A slants downward and has two continuations,

one downward at A and water-sealed in the water space B, and the otherone,.A, extending upwards. 1 The waterspace B collects the ammonia waterand the other products that are extracted in the machine. An overflow Bis provided at a suitable height. The as entering the inlet A is met bya strong ne spray from the nozzle G. This spray, if ofwater, meeting thehot gas, will cause a very considerable evaporation of water and willalso absorb a very considerable proportion of the ammonia and some ofthe other impurities present. The gas, with the evaporated water andfinely divided spray, passes up the pipe A and issues .therefrom intothe inverte 'rotar cup O driven by shaft C and pulley D, whic issuitably driven at high speed,

The invented cup 0 extends down a considerable distance around the'pipeA, so that .the gas has to flow downwards around the pipe A" beforepassing beneath the lower downwards, as shown, and extending edge of thecup O. The inner wall of the cup 0 is provided with a series of inwardlyprojecting beaters or blades E which move with it, and the outersurfaceof the pi e A is provided with similar beaters or lilades Fbetween which the blades E pass with high velocity and in closeproximity, as shown. Owing to the combined action of the beaters andcentrifugal force, the gas is subjected to a very thorough mixing andbeating-action;

andthe dust and finely divided spray or liquids of any sort are thrownoutwards against the inner surface of the on O, down which they may passto itslower ec ge and be thrown off, finally passing down through thepipe I intothe water seal B. The lower surface of the-upper end of thecup O'is also provided with beaters or blades E, as shown, to aid in theaction. The outer surface of the cup 0 is provided with a series ofconcentric annular shelves J which preferably are progressively'lon 'erfrom the lowest to the highest and whic are provided at frequentintervals with. depending blades or vanes K.

The outer casing H inclos'es the space around the cup C and extends fromthe tube A downwards and outwards and then u wards, flarin slightlyinstead of being parallel with the wall o'f-the cup C. At the top H, ofthe casing it is provided with a water-seal M for the shaft C and thegas outlet N. In the up er portion of the apparatus, and prefera ly mthe gas outlet N, is located a second spray nozzle 0 which delivers aspray into the gas above the rotary cup C. This spra the s elf J, andpartly onto tie uppermost falls artly on the top of the cu O, partly oilstationary shelf L. There are a series of those shelves secured on' theinner wall'of the casing H andpreferably slanting inwards and to thewall of the cu C between the shelves J and vanes K. T 1e water fallingon the rapidly rotatin cupO and u per-most shelf J is thrown off byjthecentri ugal action directly against the inner wallof the casing. Thenceflowing downwards and inwards'along the stationary shelf L, it dripsonto the next shelf J, from which'it is again thrown QB in a fine sprayagainst the casing. .A ain it nearly flows downwards and inwards over te secondshelf L onto the third shelf K, and so on through the series. Inthis way the gas fiowing'upwar'ds around "the cup O, is subjected to aviolent beating and whirling ac- '45 a second apparatus substantialltytion from the vanes K and is compelled to take a sinuous course aroundthe successive shelves J and L and is intimately subjected to the wateron the surface of the stationary 5 shelves and in passing each of theshelves J is subjected to the fine spray thrown therefrom directlyacross the space through which the gas is passing. It will be seen thatthe gas as it passes outwards from the lower end of 19 the cup C, passesupwards in this devious course to the gas out et N, while the cleans ingliquid from the s ray '0 passes downwards 1n the opposite irection tothe gas and finally escapes from the lowermost shelf L through thewater-sealed pipe I, carrying with it the absorbed or collectedimpurities. The gas therefore meets the'water in a fresher condition ateach succeeding shelf as it passes-toward the gas outlet, while the 2water passing downwards becomes richer and richer in 1m urities from thegas. I make no claim broa y, however, to the passing of gas and liquidin opposite directions for this purose.

P The other details of the ap aratus will be readil understood, -;-as.apipuled, to those skille in the art, without rther description.

It will be seen that the gas is first subjected to a sprayby which ittakes up vapor, and 1f highly heated is considerably coo ed by thespray. .As a second step the gas is subjected to beating and centrifugalaction as it asses downward to the lower edge of the on and then assingupward between the s elves J and. it is subjected intimately to the wetsurfaces. It is su-bjected to the centrifugal action and to the sprayinaction on the out'er'side of the cup C an to the flowing 40 water on theshelf L, the water flowing downward and the gas upward. Lastly, it issub-- jected to the spray O. As the gas thus cleaned fpasses from theapparatus with an excess 0 moisture, I prefer to pass it through likethat described, wlth the exception 0 the water sprays. In this secondapparatus any condensed vapor or free moisture will be thrown out b theaction of the apparatus, carrying with 1t the absorbed ammonia, andwhatever other impurities it contains will drain down into the waterseal beneath the a paratus.

In place of the water spray at GI may introduce steam or part steam andwater,

according to the condition and qualities of the gas to be washed, thechoice, as will be understood, depending largely on the composition andtem erature of the gases. I dey sire also to inc ude as equivalentsother liqpicis used in place of the water.

im the following? 1. Apparatus for carrying out the action described andcombining means for spraying i the gas, a passageway for conducting thegas and subjecting it to such spraying, means-for conducting the gastherefrom, means through which the gas flows downwardly for beating thegas and simultaneously subjecting it to centrifugal force, and furthermeans through which the gas flows upwardly for beating it and subjectingit to centrifugal force c'o-act ing with means for supplying additionalwater during its passage through the last said means, substantiallyasset fOIthu 2, Apparatus forcleaning gas, combining a water spraydevice, a gas inlet for conducting'gas t ing gas thereto, a water-sealeddrip connec-' tion therefrom, a-horizontally revoluble :cen+

trifugal device carrying external'and. internal heaters or blades,meansfor conducting the.

gas successively to the internal and external eaters or blades,v aseries of stationary shelves in cooperative relation with the exteriorboaters, and means fordeliveringwater to the said shelves in a directionopposite to the flow of the gas past the said shelves, said meansconsistingtof a water spraying device.

4. In combination in a gas cleaning device, a water spray device,'a gasinlet for conduct ing gas thereto, a passage way for conducting the 'gastherefrom provided with outwardly extending blades, a-casing havinginward and downward inclined. shelves, a rotary centrifugal devicehaving outwardly extending shelves for co-acting with the inclinedshelves, said shelves being so placed that liquid will pass from shelfto shelf successively, means for introducing liquid therefor,

said centrifugal device also having inwardly extending bladescoactingwith the blades onthe passa e way and means for passing gasbetween t 1e said sets of shelves. 5. In combination in a gas cleaningdevice a water spray device, a gas inlet for conducting gas thereto, apassage way for conducting the gas therefrom provided with outwardlyextending blades, a casing having inward and downward inclined shelves,a rotary cen;

trifugal device having outwardly extending shelves for co-a'cting withthe inclined shelves, said shelves-being so placed that liquid will passfrom shelf to shelf successively, means for introducin liquid therefor,said centrifugal device also. aving inwardly extending bladescooperating with the blades on the passage way, means for passing gasereto, a water-sealed drip connec- 7 tion therefrom, a horizontallyrevolublecenbetween the passageway and the centrifugal device, and meansfor passing the gas between the said centrifugal device and the saidcasing in an opposite direction to the flow of the water.

6. A gas cleaning apparatus combining rotary and stationary membersforming pas? sage ways for the gas between them, shelvesfirst saidshelves and extending in position to drip onto them, casings supportingthe said coacting shelves and forming conducting blades carried on theinterior 0 walls'for the gas, means for supplying water to the sets ofshelves outside of .the rotating member, all of said shelves cooperatingto cause the gas to pass in a tortuous manner between the shelves whilebeing acted upon by the rotary member and subjected to the spraydelivered thereby between the outer sets of shelves. I

8. In combination in a gas cleaner, a cen tral gas passageway havingconnections for admitting the gas thereto, a rotary inverted cup havinga vertical axis and surrounding the'upper end of the said passa eway,beater blades carried on the interior 0 the said cu cooperatingbeater-blades carried by the said passageway, a casing surrounding thesaid cup and receiving the gas delivered therefrom, external projectionscarried by the said cup and internal cooperating projections carried bythe said casing, and means for supplying water to the said projectionswhereby the gas is brought into intimate contact with the water 'whilebeing acted upon by the saidprojections.

9. In combination in a gas cleaner, a centralgas passageway havingconnections for admitting the gas thereto,

a rotary inverted cup having a vertical axis and surrounding the upperend of the said passa eway, beater l the said cup, cooperating beaterblades carried by the said passageway, a casing surrounding the said cupand receiving the as delivered therefrom, a series of internal shelveson the said casing, a series of 006 crating external shelves on the saidcup an overlapped by the shelves on the casing, means for deliveringwater above the said shelves whereby the gas is subjected to water onthe successive shelves carried by the casin and to spray thrown by theshelves carried y the said cup, and means for draining off andcollecting the water.

10. Gas cleaning apparatus combining with a suitable casing a gas inlet,a gas 'outlet, a rotary gas beating member turning on a vertical axisand provided with outward projecting beater blades and outwardprojecting shelves, a plurality of inward projecting shelves. fordirecting the gas toward the said beater blades, vice-for the as beforeit is su' said beater b ades and shelves,

11. Gas cleaning apparatus combining with a suitable casing a gas inlet,a gas outlet, a rotary gas beating member turning on a vertical axis andprovided with outward projecting beater blades and outward projectingshelves, a plurality of inward projecting shelves for directing the gastoward the said heater blades, a spray or jet devicefor the as before itis subjected to the said beater lades and shelves, and means forsupplying jected to the water to the said shelves.

'12. Gas cleaning apparatus combining with a suitable casing a gasinlet, a gas outvertical axis and rovided with outward projecting beaterb ades and outward proecting shelves, a plurality of inward projectingshelves for directing the gas toward the said beater'blades, a spray orjet device for the gas before it is subjected to the said beater.blades'and shelves, and means for initially beating the gas before itpasses to the said shelves and beater blades.

, In testimony whereof I have signed this specification in the presenceof two subscribing witnesses, Feby 12, 1908. Y

Y ALFRED ERNST.

. Witnesses:

SUE B. FRITZ, ALrcE A. TRILL.

and a spray or jet delet, a rotary gas beating member turning on a

